John Oliver and his friends Elmo and Zoe from Sesame Street taught children and adults about the dangers of lead and what can and should be done about it during a segment on Last Week Tonight. Oliver enlisted his puppet pals because in 1996 Sesame Street produced a video teaching children how to keep themselves safe from lead, and not enough has been done to address the problem in the 20 years since that video.

Here is the original “Lead Away!” Sesame Street segment from 1996 teaching kids how to protect themselves from lead.